diff --git a/scripts/test-integration.bat b/scripts/test-integration.bat
index b8d673f70d4..feb03625fcc 100644
--- a/scripts/test-integration.bat
+++ b/scripts/test-integration.bat
@@ -15,6 +15,8 @@ if "%INTEGRATION_TEST_ELECTRON_PATH%"=="" (
 	echo Running integration tests out of sources.
 ) else (
 	:: Run from a built: need to compile all test extensions
+	:: because we run extension tests from their source folders
+	:: and the build bundles extensions into .build webpacked
 	call yarn gulp compile-extension:vscode-api-tests
 	call yarn gulp compile-extension:vscode-colorize-tests
 	call yarn gulp compile-extension:markdown-language-features
diff --git a/scripts/test-integration.sh b/scripts/test-integration.sh
index 9aff685b7c6..df57fec23e6 100755
--- a/scripts/test-integration.sh
+++ b/scripts/test-integration.sh
@@ -21,6 +21,8 @@ then
 	echo "Running integration tests out of sources."
 else
 	# Run from a built: need to compile all test extensions
+	# because we run extension tests from their source folders
+	# and the build bundles extensions into .build webpacked
 	yarn gulp compile-extension:vscode-api-tests
 	yarn gulp compile-extension:vscode-colorize-tests
 	yarn gulp compile-extension:markdown-language-features